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Archived

Avalanche Forecast

Dec 9th, 2018–Dec 10th, 2018
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: South Coast.

Avalanche hazard is confined to the high alpine where snow has accumulated. A series of storms this week will hopefully bring snow to lower elevations.

Confidence

Moderate - Forecast snowfall amounts are uncertain

Weather Forecast

SUNDAY NIGHT: Cloudy with flurries, accumulation up to 10 cm, moderate south wind, freezing level 1000mMONDAY: Periods of snow, accumulation between 10-20 cm, moderate south wind, freezing level 1000mTUESDAY: Heavy snow, accumulating up to 45 cm, moderate south wind with strong gusts, freezing level 1400mWEDNESDAY: Snow, accumulating up to 55 cm, moderate wind with strong to extreme gusts, freezing level 1000m

Avalanche Summary

No avalanches have been reported in the region. Please submit any observations you have to the Mountain Information Network here.

Snowpack Summary

On Sunday rain fell around most of the region, with snow beginning to accumulate at the highest elevation areas. This new snow has covered a crust on the old snow surface.Prior to the recent precipitation, the snowpack has been below threshold depth for avalanches in the North Shore mountains and terrain below 1500 m elevation. In alpine areas near Squamish, up to of 70cm settled snow is on the ground. In these areas, a crust is lower in the snowpack, however it is now suspected to be well bonded to the overlying storm snow. 

Avalanche Problems

Storm Slabs

Snowfall starting Sunday has deposited up to 15 cm at higher elevations in the region. This new snow was accompanied with moderate winds and is initially not expected to bond well with the older snow.
Minimize overhead exposure during periods of heavy loading from new snow, wind.Be careful with wind loaded pockets, especially near ridge crests and roll-overs.Watch for whumpfing, hollow sounds, shooting cracks or recent avalanches.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2